The ppq m1 was able to use p99 mags. I had enough p99/sw99 in the safe to not bother with the ppq.
I didn’t buy into the ppq until the m2 came out, but those are my competition guns. Actually, I waited until the q5 came out. To me, the pdp seems to be walther’s way of cutting costs to increase customer base. It’s been a couple years since I looked at them, so can’t remember what I base that on. Just remember that was my thought at the time.
I still prefer my p99’s as carry guns. I like the decocker and double action first shot, and also the ambi mag release.